Color:Grey Item Dimensions: L x W 13x13 centimeters 【Super Quiet Hamster Wheel】: Quiet hamster wheel design brings endless running fun to your little hamster. Even if your hamster runs on the track and the wheel spins, it will bring you a peaceful night. 【A must-have accessory for hamster cage】: furry animals, because hamsters like hamster wheels like runners to help them get rid of boredom and enrich their night life. They can also continue to exercise to maintain physical strength. 【Comfortable Hamster Wheel】: The reasonable size of the drum and the wide running track bring a relaxed feeling to the back, because they don’t need to bend their back when running, allowing them to enjoy some running time endlessly, helping them exercise their muscles and stay happy and mentally healthy. 【Durable Toy】: The wheel is made of high quality acrylic and plastic, strong and lightweight, durable and long service life. Suitable for hamsters, guinea pigs, chinchillas and other small animals.